HomeAsset LibraryAstronomyPhysics 2010School FilesSoftwareSpeed TestTrek DataTriviaVideo GamesWallpaperWeather
The following physics responses are provided by a student and, as such, should be considered in that context. While every effort is made for accuracy, absolute correctness cannot be fully guaranteed.
| C | I | Question | Answer |
|---|---|---|---|
| 9 | A stonecutter's chisel has an edge area of 0.50 cm^2. If the chisel is struck with a force of 45 N, what is the pressure exerted on the stone? | 900000 Pa | |
| 9 | A tire stops a car by use of friction. What modulus should we use to calculate the stress and strain on the tire? | shear modulus | |
| 9 | A uniform pressure of 7.0*10^5 N/m^2 is applied to all six sides of a copper cube. What is the percentage change in volume of the cube? (for copper, B = 14*10^10 N/m^2) | 0.5*10^-3 % | |
| 9 | A unit for viscosity, the centipoise, is equal to which of the following? | 10^-3 Ns/m^2 | |
| 9 | A Venturi tube may be used as the inlet to an automobile carburetor. If the inlet pipe of 2.0 cm diameter narrows to 1.0 cm diameter, what is the pressure drop in the constricted section for airflow of 3.0 m/s in the 2-cm section? (Assume air density is 1.25 kg/m3.) | 84Pa | |
| 9 | Air pressure is 1.0*10^5 N/m2, air density is 1.3 kg/m3, and the density of soft drinks is 1.0*10^3 kg/m3. If one blows carefully across the top of a straw sticking up 0.100 m from the liquid in a soft drink can, it is possible to make the soft drink rise half way up the straw and stay there. How fast must the air be blown across the top of the straw? | 27m/s | |
| 9 | An ideal fluid flows through a pipe made of two sections with diameters of 1.0 and 3.0 inches, respectively. The speed of the fluid flow through the 3.0-inch section will be what factor times that through the 1.0-inch section? | 1/9 | |
| 9 | An ideal fluid, of density 0.85*10^3 kg/m^3, flows at 0.25 kg/s through a pipe of radius 0.010 m. What is the fluid speed? | 0.94 m/s | |
| 9 | An ideal fluid, of density 0.90*10^3 kg/m3, flows at 6.0 m/s through a level pipe with radius of 0.50 cm. The pressure in the fluid is 1.3*10^5 N/m2. This pipe connects to a second level pipe, with radius of 1.5 cm. Find the speed of flow in the second pipe. | 0.67 m/s | |
| 9 | As ice floats in water, about 10% of the ice floats above the surface of the water. If we float some ice in a glass of water, what will happen to the water level as the ice melts? | The water level will remain unchanged. | |
| 9 | Atmospheric pressure is 1.0*10^5 N/m2, and the density of air is 1.29 kg/m3. If the density of air is constant as you get higher and higher, calculate the height of the atmosphere needed to produce this pressure. | 7900 m | |
| 9 | Bar One has a Young's modulus that is bigger than that of Bar Two. This indicates Bar One: | is made of material that is different from Bar Two. | |
| 9 | By what factor is the total pressure greater at a depth of 850 m in water than at the surface where pressure is one atmosphere? (water density = 1.0*10^3 kg/m3, 1 atmosphere pressure = 1.01*10^5 N/m2, and g = 9.8 m/s2) | 83 | |
| 9 | Consider two steel rods, A and B. B has three times the area and twice the length of A, so Young's modulus for B will be what factor times Young's modulus for A? | 1.0 | |
| 9 | Dams at two different locations are needed to form a lake. When the lake is filled, the water level will be at the top of both dams. The Dam #2 is twice as high and twice as wide as Dam #1. How much greater is the force of the water on Dam #2 than the force on Dam #1? (Ignore atmospheric pressure; it is pushing on both sides of the dams.) | 8 |
© 2026 - KillGorack.com
Privacy Policy
License information
Social media
Site map
Contact
KillGorack / Home